The biggest concern is how long and elongated the entrance to the natural is. It makes it nigh impossible to break attacks with tanks and liberators or with sentries, and a proxy rax bunker rush can probably wall-off the entire entrance making life hell for the defender. Even in normal games it is probably an issue since the other end of the natural choke near the ramps also looks to be rather restrictive.

The pair of bases at three o'clock (and the pair at nine o'clock) are really close together similar to Battle on the Boardwalk, but I don't get the purpose for having them this close here. I don't think that "buy one get one free" is a great model for expansions.

The middle of the map shows a fear of siege tanks ruining things, and as a result there's tons of empty space to keep siege tanks away from mineral lines which eats up a lot of map real estate and warps the design a bit. Siege tanks shooting the back of a mineral line isn't too a big deal when the base is a fourth or a fifth, especially if the back is easily reachable by the defending player. You can move or rotate bases to make things safer without requiring the golds and the top-right/bottom-left corner bases to take so much extra space causing chokes that you might not want.

The shape of the main and to a lesser extent the natural are a bit off, though I'm not quite sure how to explain why. Can you shoot the main geyser from the natural with something like a stalker? Maybe try changing the mineral line/gas geyser positions, reshaping things.